CN106090182A - A kind of differential lock of band proximity switch - Google Patents
A kind of differential lock of band proximity switch Download PDFInfo
- Publication number
- CN106090182A CN106090182A CN201610701348.2A CN201610701348A CN106090182A CN 106090182 A CN106090182 A CN 106090182A CN 201610701348 A CN201610701348 A CN 201610701348A CN 106090182 A CN106090182 A CN 106090182A
- Authority
- CN
- China
- Prior art keywords
- proximity switch
- shift fork
- head
- district
- differential lock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/24—Arrangements for suppressing or influencing the differential action, e.g. locking devices using positive clutches or brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H2048/305—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using manual actuators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
Abstract
The invention discloses the differential lock of a kind of band proximity switch, including the set that is slidably connected, shift fork, can be along the shift fork axle of its axially-movable, back-moving spring and a proximity switch；This proximity switch is arranged on the head side of this shift fork；When this back-moving spring is not compressed, the head of this shift fork is positioned at outside the detection district of this proximity switch, and this proximity switch disconnects；When this back-moving spring is compressed, the head of this shift fork enters in the detection district of this proximity switch, and this proximity switch is connected.Relative to prior art, the present invention uses proximity switch to replace traditional mechanical pressure switch, it is to avoid direct collision contact, and therefore service life is longer.Furthermore, proximity switch build is less, and the part stretching out main gearbox assembly after assembling is the shortest, can be prevented effectively from and assemble, transports, lifts by crane, packs and collided with in car load operation and damaging.
Description
Technical field
The invention belongs to auto parts machinery field, particularly relate to a kind of differential lock.
Background technology
A kind of locking structure that differential lock is mounted on differential mechanism, its effect is to improve automobile to dislike in muddy, icing etc.
Handling capacity in bad road conditions.When a semiaxis idle running of automobile, the differential lock rapid locked differential mechanism of energy, make two semiaxis become
For being rigidly connected, thus most moment of torsion even all torsion torque can be passed to the semiaxis not dallied, make full use of its
Adhesive force and produce enough pull strengths so that automobile can continue to travel.
The generally differential lock of Heavy-Duty Drive-Axle all can arrange mechanical pressure switch, utilizes the break-make of mechanical pressure switch
Indicate the duty of differential lock.Referring to Fig. 1, it is the structural representation of differential lock of existing band mechanical pressure switch
Figure.The differential lock 1 of this band mechanical pressure switch include being slidably connected set 10, shift fork 11, can be along the shift fork axle of its axially-movable
12, back-moving spring 13 and mechanical pressure switch 14.
In Fig. 1, double dot dash line represents when the differential lock 1 of this band mechanical pressure switch is in locked differential state, this group
The position of fork 11.This set 10 that is slidably connected is provided with cannelure, and the head of this shift fork 11 is fixedly mounted on this shift fork axle 12, its
Foot snaps in this and is slidably connected in the cannelure of set 10.This back-moving spring 13 is sleeved on this shift fork axle 12, its one end and this group
The head of fork 11 abuts, and the position of the other end is fixed.This mechanical pressure switch 14 is arranged on the head side of this shift fork 11, should
The end face of shift fork 11 head is inclined-plane.When this back-moving spring 13 is not compressed, the inclined-plane of this shift fork 11 head not with this machinery
The contact of the crown bar pin 140 of formula pressure switch 14, this mechanical pressure switch 14 disconnects, and indicates this differential lock 1 to be in inoperative
State；When this shift fork axle 12 is along its axially-movable, make this back-moving spring 13 of header suppression of this shift fork 11, this shift fork 11 head
The crown bar pin 140 of this mechanical pressure switch 14 of slope driving, this mechanical pressure switch 14 is connected, and indicates this differential lock 1
It is in the duty of locked differential mechanism.The differential lock 1 of this band mechanical pressure switch be the slope driving by shift fork 11 or from
Open the crown bar pin 140 of mechanical pressure switch 14, so that the deformation of its contained spring, and then promote contact to realize switching on-off.
But, the inner rubber part of traditional mechanical formula pressure switch is the most aging, and inevitably spring stress relaxation
And permanent deformation can cause switching function to lose ratio height.Additionally, as in figure 2 it is shown, this mechanical pressure switch 14 is arranged on master
On the final drive casing 3 of speed reducer assembly.Owing to mechanical pressure switch is limited by internal structure, its profile is relatively big, after assembling
The part stretching out main gearbox assembly is the longest, causes it assembling, transport, lift by crane, packing and be easy to be subject in car load operation
Damage to colliding with.
Summary of the invention
For the drawbacks described above of prior art, the present invention provides the differential lock of a kind of band proximity switch, traditional to replace
With the differential lock of mechanical pressure switch, its service life is longer, and instruction function is more reliable.
The technical solution used in the present invention is:
A kind of differential lock of band proximity switch, including the set that is slidably connected, shift fork, can be along the shift fork axle of its axially-movable, multiple
A position spring and proximity switch, this is slidably connected to put and is provided with cannelure, and the head of this shift fork is fixedly mounted on this shift fork axle,
Its foot snaps in this and is slidably connected in the cannelure of set；This back-moving spring is sleeved on this shift fork axle, its one end and this shift fork
Head abuts, and the position of the other end is fixed；This proximity switch is arranged on the head side of this shift fork；When this back-moving spring is not pressed
During contracting, the head of this shift fork is positioned at outside the detection district of this proximity switch, and this proximity switch disconnects；When this back-moving spring is compressed
Time, the head of this shift fork enters in the detection district of this proximity switch, and this proximity switch is connected.
This proximity switch disconnects, and indicates this differential mechanism to be in off working state；This proximity switch is connected, and indicates this differential lock
It is in the duty of locked differential mechanism, makes driver can confirm that the duty of differential lock in driver's cabin, improve and drive peace
Quan Xing.
Specifically, the inductive head of described proximity switch is towards the end face of the head of described shift fork, and this end face is provided with low level district
With the high-order district exceeding this low level district；When this back-moving spring is not compressed, this inductive head is towards this low level district, and this low level district
Being positioned at outside the detection district of this proximity switch, this proximity switch disconnects；When this back-moving spring is compressed, this inductive head is towards this height
Position district, and this high position district is positioned at the detection district of this proximity switch, the connection of this proximity switch.
Specifically, the end face of described shift fork head is provided with a projection, and this convexes to form described high-order district.
Further, described projection be surface be the boss of plane.
Specifically, the end face of described shift fork head is an inclined-plane, and its higher side forms described high-order district, relatively low side shape
Become described low level district.
Present disclosure also includes a kind of main gearbox assembly, and this main gearbox assembly includes above-mentioned band proximity switch
Differential lock.
Proximity switch, also known as proximity transducer, it has the advantage that (1) non-contact detecting, it is to avoid to sensor from
Body and the damage of object.(2) contactless output, operation lifetime is long.(3) even if in the severe rugged environment having water/oil splash also
Can stable detection.(4) response speed is fast.(5) there is small-sized inductive head, flexible for installation.
Relative to prior art, the present invention uses proximity switch to replace traditional mechanical pressure switch, relies on shift fork head
The boss in portion or inclined-plane realize switching on-off closer or far from the inductive head of proximity switch, it is to avoid dials during differential lock work
Fork contacts with the direct collision of mechanical pressure switch, so the service life of this proximity switch is longer.Existing machinery formula pressure
Switching function rubber parts the most close to the inner portion and spring ensure, but as electric elements, its internal break-make point may result in rubber
The accelerated ageing of part, the stress relaxation of spring and permanent deformation, thus cause switching function to be lost, and proximity switch can be kept away completely
Exempt from this type of failure mode.Furthermore, proximity switch build is less, and the part stretching out main gearbox assembly after assembling is the shortest, therefore
Can be prevented effectively from and assemble, transport, lift by crane, pack and car load operation is collided with and damaging.
In order to be more fully understood that and implement, describe the present invention below in conjunction with the accompanying drawings in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the differential lock of existing band mechanical pressure switch.
Fig. 2 is the structural representation of the main gearbox assembly including differential lock shown in Fig. 1.
Fig. 3 is the structural representation of the differential lock of the band proximity switch of the present invention.
Fig. 4 is the structural representation of the main gearbox assembly including differential lock shown in Fig. 3.
Detailed description of the invention
Referring to Fig. 3, it is the structural representation of differential lock of band proximity switch of the present invention.The band that the present invention provides connects
The differential lock 2 of nearly switch, including the set 20 that is slidably connected, shift fork 21, can be along the shift fork axle 22 of its axially-movable, back-moving spring 23 and
One proximity switch 24.In Fig. 3, double dot dash line represents when differential lock 2 is in locked differential state, the position of this shift fork 21；A institute
The detection district of semicircle this proximity switch 24 of arcuation region representation referred to.
This set 20 that is slidably connected is provided with cannelure, and the head of this shift fork 21 is fixedly mounted on this shift fork axle 22, its foot
Portion snaps in this and is slidably connected in the cannelure of set 20.This back-moving spring 23 is sleeved on this shift fork axle 22, its one end and this shift fork
The head of 21 abuts, and the position of the other end is fixed.This proximity switch 24 is arranged on the head side of this shift fork 21.When this reset bullet
When spring 23 is not compressed, the head of this shift fork 21 is positioned at outside the detection district A of this proximity switch 24, and this proximity switch 24 disconnects.When
When this back-moving spring 23 is compressed, the head of this shift fork 21 enters in the detection district A of this proximity switch 24, and this proximity switch 24 connects
Logical.
This proximity switch 24 includes inductive head 240.The inductive head 240 of this proximity switch 24 is towards the head of described shift fork 21
End face, this end face is provided with low level district and exceed the high-order district in this low level district.When this back-moving spring 23 is not compressed, this sensing
240 towards this low level district, and this low level district is positioned at outside the detection district A of this proximity switch 24, and this proximity switch 24 disconnects.When this
When back-moving spring 23 is compressed, this inductive head 240 is towards this high position district, and this high position district enters the detection district of this proximity switch 24
In A, this proximity switch 24 is connected.
One scheme is, the end face of the head of this shift fork 21 is provided with a projection, and this convexes to form described high-order district.Concrete,
This projection is boss that surface is plane.When this shift fork axle 22 is not promoted and is in situ, the head of this shift fork 21 is not pressed
Contract this back-moving spring 23, makes this boss away from the inductive head 240 of this proximity switch 24, and is positioned at the detection district of this proximity switch 24
Outside A, therefore this proximity switch 24 disconnects, and indicates this differential lock 2 to be in off working state；When this shift fork axle 22 by promotion along it
During axially-movable, this back-moving spring 23 of the header suppression of this shift fork 21, make this boss close to the inductive head of this proximity switch 24
240, and enter in the detection district A of this proximity switch 24, therefore this proximity switch 24 is connected, and indicates this differential lock 2 to be in locked
The duty of differential mechanism.Described projection can be also arc-shaped, needle pattern or other shapes.
Another program is, the end face of the head of this shift fork 21 is an inclined-plane, and its higher side forms described high-order district, relatively low
Side forms described low level district.In like manner, when this shift fork axle 22 is not promoted and is in situ, the head of this shift fork 21 does not compresses
This back-moving spring 23 so that it is the higher side of end face is away from the inductive head 240 of this proximity switch 24, and is positioned at this proximity switch 24
Detection district A outside, therefore this proximity switch 24 disconnects, and indicates this differential lock 2 to be in off working state；When this shift fork axle 22 is pushed away
Dynamic and during along its axially-movable, this back-moving spring 23 of the header suppression of this shift fork 21 so that it is the higher side of end face connects close to this
The inductive head 240 of nearly switch 24, and enter in the detection district A of this proximity switch 24, therefore this proximity switch 24 is connected, and instruction should
Differential lock 2 is in the duty of locked differential mechanism.
The shape of the head of this shift fork 21 is not limited to such scheme, as long as can realize this proximity switch 24 when it moves
Break-make, play indicate this differential lock 2 duty effect.
The present invention also provides for a kind of main gearbox assembly, refers to Fig. 4, and it is the main reducing gear of the differential lock 2 including Fig. 3
The structural representation of assembly.This main gearbox assembly includes the differential lock 2 of this band proximity switch, final drive casing 3, differential carrier
The structure such as 4 and two semiaxis 5.
This final drive casing 3 is provided with a groove.The differential lock 2 of this band proximity switch is arranged on the recessed of final drive casing 3
In groove.The two ends of this differential carrier 4 are connected with this final drive casing 3 by bearing.These two semiaxis 5 are each passed through this differential mechanism
The two ends of shell 4.
The one end of this differential carrier 4 is provided with multiple engaging tooth.This set 20 that is slidably connected is by spline package wherein
On individual semiaxis 5, and can sliding axially along this semiaxis 5, this set that is slidably connected 20 is provided with multiple engaging tooth, the plurality of engaging tooth
Suitable with multiple engaging tooths of this differential carrier 4 end and do not contact.This shift fork axle 22 is located at the groove of this final drive casing 3
In, its two ends respectively with this final drive casing 3 pivot joint.This back-moving spring 23 is sleeved on this shift fork axle 22, its one end and this group
The head of fork 21 abuts, and the other end abuts with this final drive casing 3.This proximity switch 24 is arranged on the head one of this shift fork 21
Side, and be arranged on this final drive casing 3.
The operation principle of the differential lock 2 of this band proximity switch is: promote this shift fork axle 22, and this back-moving spring 23 is compressed,
This shift fork 21 drives the ends that this set 20 that is slidably connected slides to this differential carrier 4, multiple engaging tooths of this set 20 that is slidably connected with
Multiple engaging tooths of this differential carrier 4 end engage, and making is slidably connected with this overlaps 20 semiaxis 5 being connected and these differential carrier 4 shapes
One-tenth is rigidly connected, and differential mechanism is locked, does not play differential action, and two semiaxis 5 rotate with identical speed, prevent driving wheel from beating
Sliding；Not promoting this shift fork axle 22, there is not compressive deformation in this back-moving spring 23, and this shift fork 21 is in original position, and this slip is tied
Trap 20 does not contacts with this differential carrier 4, and differential mechanism plays differential action.This proximity switch 24 rely on shift fork 21 head boss or
Inclined-plane, closer or far from the inductive head 240 of proximity switch 24, to realize switching on-off, thus indicates the difference of this band proximity switch
The duty of speed lock 2.
Relative to prior art, the present invention uses proximity switch to replace traditional mechanical pressure switch, relies on shift fork head
The boss in portion or inclined-plane realize switching on-off closer or far from the inductive head of proximity switch, it is to avoid dials during differential lock work
Fork contacts with the direct collision of mechanical pressure switch, thus improves the service life of proximity switch.Existing machinery formula pressure is opened
Close function rubber parts the most close to the inner portion and spring ensures, but as electric elements, its internal power on/off may result in rubber parts
Accelerated ageing, the stress relaxation of spring and permanent deformation, thus cause switching function to be lost, and proximity switch can be avoided completely
This type of failure mode.Furthermore, proximity switch build is less, and the part stretching out main gearbox assembly after assembling is the shortest, therefore may be used
It is prevented effectively from and is assembling, transport, lift by crane, pack and car load operation is collided with and damaging.
The invention is not limited in above-mentioned embodiment, if various changes or deformation to the present invention are without departing from the present invention
Spirit and scope, if these are changed and within the scope of deformation belongs to claim and the equivalent technologies of the present invention, then this
Bright being also intended to comprises these changes and deformation.
Claims (6)
1. a differential lock for band proximity switch, including the set that is slidably connected, shift fork, can be along the shift fork axle of its axially-movable and reset
Spring, this is slidably connected to put and is provided with cannelure, and the head of this shift fork is fixedly mounted on this shift fork axle, and its foot snaps in this cunning
In the cannelure of dynamic combined cover；This back-moving spring is sleeved on this shift fork axle, and its one end abuts with the head of this shift fork, the other end
Position fix；It is characterized in that: also include a proximity switch, this proximity switch is arranged on the head side of this shift fork；When this
When back-moving spring is not compressed, the head of this shift fork is positioned at outside the detection district of this proximity switch, and this proximity switch disconnects；When this is multiple
When position spring is compressed, the head of this shift fork enters in the detection district of this proximity switch, and this proximity switch is connected.
The differential lock of band proximity switch the most according to claim 1, it is characterised in that: the inductive head court of described proximity switch
To the end face of the head of described shift fork, this end face is provided with low level district and exceeds the high-order district in this low level district；When this back-moving spring not
When being compressed, this inductive head is towards this low level district, and this low level district is positioned at outside the detection district of this proximity switch, and this proximity switch breaks
Open；When this back-moving spring is compressed, this inductive head is towards this high position district, and this high position district is positioned at the detection district of this proximity switch
In, this proximity switch is connected.
The differential lock of band proximity switch the most according to claim 2, it is characterised in that: the end face of described shift fork head is provided with
One is protruding, and this convexes to form described high-order district.
The differential lock of band proximity switch the most according to claim 3, it is characterised in that: described projection be surface be plane
Boss.
The differential lock of band proximity switch the most according to claim 2, it is characterised in that: the end face of described shift fork head is one
Inclined-plane, its higher side forms described high-order district, and relatively low side forms described low level district.
6. a main gearbox assembly, it is characterised in that: include the differential of band proximity switch described in any one of claim 1-5
Lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701348.2A CN106090182A (en) | 2016-08-22 | 2016-08-22 | A kind of differential lock of band proximity switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701348.2A CN106090182A (en) | 2016-08-22 | 2016-08-22 | A kind of differential lock of band proximity switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106090182A true CN106090182A (en) | 2016-11-09 |
Family
ID=57224597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610701348.2A Pending CN106090182A (en) | 2016-08-22 | 2016-08-22 | A kind of differential lock of band proximity switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106090182A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732752A (en) * | 1971-07-26 | 1973-05-15 | Gen Motors Corp | Locking type differential gear mechanism |
| US4555962A (en) * | 1982-12-21 | 1985-12-03 | Fiat Trattori S.P.A. | Manually engaged and automatically disengaged locking device for a vehicle differential |
| CN1093446A (en) * | 1992-11-16 | 1994-10-12 | 易通公司 | Drive the locking framework of axle differential |
| CN1876426A (en) * | 2006-07-10 | 2006-12-13 | 力帆实业(集团)有限公司 | Differential speed rear axle assembly of sand beach vehicle |
| CN2906223Y (en) * | 2006-03-24 | 2007-05-30 | 老河口众鑫汽车零部件有限公司 | Interaxle differential lock operating mechanism assembly |
| CN201255218Y (en) * | 2008-09-12 | 2009-06-10 | 中国第一汽车集团公司 | Single-stage drive axle with wheel edge differential lock |
| CN102889359A (en) * | 2012-11-07 | 2013-01-23 | 广东富华重工制造有限公司 | Driving axle differential lock |
| CN205937704U (en) * | 2016-08-22 | 2017-02-08 | 广东富华重工制造有限公司 | Take proximity switch's differential lock |
-
2016
- 2016-08-22 CN CN201610701348.2A patent/CN106090182A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732752A (en) * | 1971-07-26 | 1973-05-15 | Gen Motors Corp | Locking type differential gear mechanism |
| US4555962A (en) * | 1982-12-21 | 1985-12-03 | Fiat Trattori S.P.A. | Manually engaged and automatically disengaged locking device for a vehicle differential |
| CN1093446A (en) * | 1992-11-16 | 1994-10-12 | 易通公司 | Drive the locking framework of axle differential |
| CN2906223Y (en) * | 2006-03-24 | 2007-05-30 | 老河口众鑫汽车零部件有限公司 | Interaxle differential lock operating mechanism assembly |
| CN1876426A (en) * | 2006-07-10 | 2006-12-13 | 力帆实业(集团)有限公司 | Differential speed rear axle assembly of sand beach vehicle |
| CN201255218Y (en) * | 2008-09-12 | 2009-06-10 | 中国第一汽车集团公司 | Single-stage drive axle with wheel edge differential lock |
| CN102889359A (en) * | 2012-11-07 | 2013-01-23 | 广东富华重工制造有限公司 | Driving axle differential lock |
| CN205937704U (en) * | 2016-08-22 | 2017-02-08 | 广东富华重工制造有限公司 | Take proximity switch's differential lock |
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Application publication date: 20161109 |
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